package com.atguigu.lease.web.app.service.impl;


import com.atguigu.lease.common.constants.RedisConstant;
import com.atguigu.lease.common.jwt.JwtUtil;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.springmvc.LeaseException;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.UserInfoService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.atguigu.lease.web.app.vo.user.UserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.Random;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private RedisTemplate<String,Object> redisTemplate;

    @Autowired
    private UserInfoService userInfoService;

    @Override
    public void sendCode(String phone) {
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        Boolean hasKey = redisTemplate.hasKey(key);

        if(hasKey){
            //0.检查手机号是否发送，是否在有效期内！在的话 告知发送频繁
            /*
            方案一：查看验证码是否存在，存在不能发送！有效期 == 前端倒计时
                   根据key获取值，有就不发 没有 发送验证码
            方案二：前端倒计时60  60秒后可以发送  300秒有效期
                  两个个常量 1 总时间300  2间隔时间60
                  + redisTemplate获取剩余时间
                  if(1 - 3 > 2) 可以发 总时间-剩余时间  验证码发了多久
             */
            //1
            Integer appLoginCodeTtlSec = RedisConstant.APP_LOGIN_CODE_TTL_SEC;
            //2
            Integer appLoginCodeResendTimeSec = RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC;
            //3
            Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);

            if(appLoginCodeTtlSec - expire < appLoginCodeResendTimeSec){
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }
        }
        //1.生成验证码
        // 6位数字
        Random random = new Random();
        Integer it =random.nextInt(1000000);
        String code = it.toString();
        System.out.println("验证码：" + code);
        //2.存储到redis里面
        redisTemplate.opsForValue().set(key,code,RedisConstant.APP_LOGIN_CODE_TTL_SEC,TimeUnit.SECONDS);
        //3.发送验证码
    }

    @Override
    public String login(LoginVo loginVo) {
        //接收前端手机号码和验证码
        //对比验证码是否正确
        String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();
        String code = (String) redisTemplate.opsForValue().get(key);
        if(code == null || !code.equals(loginVo.getCode())){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }
        //正确 -> 登录或者注册
        LambdaQueryWrapper<UserInfo> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(UserInfo::getPhone,loginVo.getPhone());
        UserInfo userInfo = userInfoService.getOne(lambdaQueryWrapper);
        if(userInfo == null){
            //注册
            userInfo = new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setAvatarUrl("http://www.baidu.com/img/bd_logo.png");
            //佚名 + 手机号后四位
            userInfo.setNickname("佚名"+loginVo.getPhone().substring(7));
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfoService.save(userInfo);
        }
        //判断用户是否可以用
        if (userInfo.getStatus() == BaseStatus.DISABLE) {
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }
        //可以使用  -> jwt -> token -> 返回
        String token = JwtUtil.createToken(userInfo.getId(),userInfo.getAvatarUrl());
        return token;
    }

    @Override
    public UserInfoVo info(String accessToken) {
        //1.解析userId
        Integer userId = (Integer) JwtUtil.parseToken(accessToken).get("userId");
        //2.根据userId查询
        UserInfo userInfo = userInfoService.getById(userId);
        //3.封装vo
        UserInfoVo userInfoVo = new UserInfoVo(userInfo.getNickname(),userInfo.getAvatarUrl());
        return userInfoVo;
    }
}
